condition mean min max ZT0-3 56.2 56.2 56.2 ZT4-7 56.9 56.9 56.9 ZT8-11 89.30000000000001 89.30000000000001 89.30000000000001 ZT12-15 69.35 69.35 69.35 ZT16-19 22.55 22.55 22.55 ZT20-23 59.1 59.1 59.1